The name Dennis is an American baby name. In American the meaning of the name Dennis is: Follower of Dionysius (Greek god of wine). French Meaning: The name Dennis is a French baby name. In French the meaning of the name Dennis is: Named for Saint Denys.
When combining data reported from several sources including my own 20 years dealing with crash prevention and resolution, a trend becomes clear; about 70% of Windows system crashes are caused by third party drivers operating in Kernel Mode, 15% is unknown, 10% is from faulty hardware (more than half from bad memory) and only about 5% from faulty Microsoft code.
Run that for 8+ hours. If you get a single error, then it has to do with your memory... Bad memory can cause the PC to crash during startup, 5 minutes after startup, or even a week after startup. It's really just random depending on when the bad sector is used, or when the timing gets overloaded due to bad timing. You can try 1 stick at a time to narrow it down..